You are stuck in a room after a major earthquake and firefighters are looking for you. there is only one window open and it's very live wires are hanging from the ceiling and there is water on the ground from plumbing being messed all you have to work with is a metal pipe, a fire extinguisher, 4 science textbooks, 4 tables and 4 chairs. you need to get a message out that you are there. what are some efficient ways to get out?